// Called when the user clicks on the browser action.
chrome.browserAction.onClicked.addListener(function(tab) {
  chrome.tabs.executeScript(null, { file: 'less-1.4.1.min.js' }, function() {
      chrome.tabs.executeScript(null, { file: 'lib/codemirror.js' }, function() {
          chrome.tabs.executeScript(null, { file: 'mode/css/css.js' }, function() {
              chrome.tabs.executeScript(null, { file: 'contentScript.js'
              });
          });
      })
  });
});
